Save
Busy. Please wait.
Log in with Clever
or
show password
Forgot Password?
Don't have an account?  Sign up 
Sign up using Clever
or
Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account. Your email address is only used to allow you to reset your password. See our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
focusNode
Didn't know it?
click below
 
Knew it?
click below
Don't Know
Remaining cards (0)
Know
0:00
edit
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Biology Quizlet #21

15 terms quater 4

TermDefinition
cell The basic unit of structure and function in living things
cell theory idea that all living things are composed of cells, cells are the basic units of structure and function in living things, and new cells are produced from existing cells
prokaryotic cell A type of cell lacking a membrane-enclosed nucleus and membrane-enclosed organelles
eukaryotic cell A type of cell with a membrane-enclosed nucleus and membrane-enclosed organelles.
cytoplasm A jellylike fluid inside the cell in which the organelles are suspended
cytoskeleton A network of fibers that holds the cell together, helps the cell to keep its shape, and aids in movement
organelles Structures specialized to perform distinct processes within a cell.
plasma membrane a microscopic membrane of lipids and proteins that forms the external boundary of the cytoplasm of a cell and that regulates the passage of molecules in and out of the cytoplasm.
endosymbiotic theory theory that eukaryotic cells formed from a symbiosis among several different prokaryotic organisms
cell wall A rigid layer of nonliving material that surrounds the cells of plants and some other organisms.
central vacuole A large vacuole that rests at the center of most plant cells and is filled with a solution that contains a high concentration of solutes.
chloroplast An organelle found in plant and algae cells where photosynthesis occurs
mitochondria an organelle found in large numbers in most cells, in which the biochemical processes of respiration and energy production occur.
centriole structure in an animal cell that helps to organize cell division
lysosome cell organelle filled with enzymes needed to break down certain materials in the cell
Created by: rathburn74
Popular Biology sets

 

 



Voices

Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!
"Know" box contains:
Time elapsed:
Retries:
restart all cards